At the solid surfaces the semi-empirical “wall functions” 1) are used to approximate the shear stress due to the no-slip condition at the wall. The value of k and ɛ are those derived from an assumption of an equilibrium boundary layer. At the exit boundaries, a constant pressure ...
Farther from the wall, a logarithmic temperature profile is found, and in the outermost parts of the boundary layer, turbulent mixing becomes the dominant mode of transport. The boundary layer ends where turbulence dies out and the uniform free-stream conditions prevail, with the result that the...
In a wall element for the boundary wall of a chamber or hall, having an increased heat storage capacity and composed of >=1 heat-arresting and >=1 heat-storing layer, (a) the heat-arresting layer situated on the side exposed to the outside air consists of two mutually spaced discs or...
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The turbulent boundary layer along the surface of high-speed vehicles drives shear stress and heat flux. Although essential to the vehicle design, the unde
Building interior layout reconstruction from through-the-wall radar image using MST-based method In order to reconstruct the building interior layout from the through-the-wall radar image, this paper proposes a method based on minimum spanning tree (MS... B Chen,T Jin,B Lu,... - 《Eurasip...
Furthermore, to ensure that the participant was aware that the boundary was impassable, they were required to “activate” red sensors located on each side of a boundary (eight sensors in total, positioned at a height of 2 virtual metres; wall trigger radius = 0.2 virtual metres), ...
Design and provide a joint DLR/UniBw experiment of a TBL in a strong APG at high Re for the database (see step 1.) and as a testcase to calibrate RANS turbulence models; 3. Develop an (empirical) wall law for TBLs in an APG; 4. Develop and calibrate a modification for the SS...
In particular, the viscosity effects which cannot be neglected close to the wall can be taken into account by adding a correcting term in the normal admittance. Also, sometimes, in order to attenuate the wave which propagates, some parts of the walls (or all the walls) are covered with ...
the Great Wall project can still be found with complete facilities (seeFigure 1.3). The structure is solid and well laid out, good for both attack and defense. At each strategic point there is a fortress constructed for garrison troops. Troops could go outside the wall to patrol or, when...